van der Waals force(redirected from Dispersion Forces)
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van der Waals force
A weak, short-range attractive force between atoms or molecules caused by their dipole moments, often arising in otherwise nonpolar atoms or molecules from a temporary shift of orbital electrons to one side of one atom or molecule.
[After Johannes Diderik van der Waals.]
van der Waals force(văn′ dər wôlz′)
A weak force of attraction between electrically neutral molecules that collide with or pass very close to each other. The van der Waals force is caused by temporary attractions between electron-rich regions of one molecule and electron-poor regions of another. These attractions are very common but are much weaker than chemical bonds. The van der Waals force is what allows water vapor to condense into liquid water.
van der Waalsin voima
van der Waalskracht
van der Waalskraft